期刊
WATER SCIENCE AND TECHNOLOGY
卷 70, 期 9, 页码 1456-1464出版社
IWA PUBLISHING
DOI: 10.2166/wst.2014.376
关键词
cold conditions; micro-membrane filtration; physicochemical-biological; sewage treatment
资金
- Key Program of the National Natural Science Foundation of China [51038003]
- National High Technology Research and Development Program of China [2012AA063508, 2011AA060906]
- Topic-Oriented Class of the State Key Laboratory of Urban Water Resource and Environment [2010DX13]
Biological treatment processes give relatively poor pollutant removal efficiencies in cold regions because microbial activity is inhibited at low temperatures. We developed an enhanced physicochemical-biological wastewater treatment process that involves micro-membrane filtration, anaerobic biofilter, and aerobic biofilter to improve the pollutant removal efficiencies that can be achieved under cold conditions. Full-scale experiments using the process were carried out in the northeast of China, at outdoor temperatures of around -30 degrees C. The average removal efficiencies achieved for chemical oxygen demand, total phosphorus, ammonia nitrogen, and suspended solids were 89.8, 92.9, 94.3, and 95.8%, respectively, using a polyaluminium chloride dosage of 50 mg L-1. We concluded that the process is effective to treat sewage in cold regions.
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